I know that peltier devices are not worth it. There are air to air heat
exchangers but in my experience you do the following in the following order:
1.. “Satellite White” paint. This does more than anything else you will
do. More than a sun shade, more than anything.
2.. Force air ventilation with air filters and thermostats. I have also
used thermally activated louvers too. Great choice if you don’t have much live
load.
3.. If that does not work, use active vapor phase cooling.
Peltier just uses a ton of electricity, produces a ton of extra heat for very
little cooling.
I have tried layers of insulation on the outside of the box. Sun shades. Even
had telemetery on everything to track the changes.
From: Ken Hohhof
Sent: Friday, August 9, 2019 8:23 AM
To: 'AnimalFarm Microwave Users Group'
Subject: Re: [AFMUG] Small climate controlled enclosure
Bury it in the ground? I have a customer with a house that is mostly buried in
the ground, and I think adobe houses similarly use the thermal mass of the
bricks to average out t he daytime and nighttime temperatures.
There have been news reports recently about advances in radiative cooling that
can passively cool to as much as 20 degrees below ambient air temperature even
during the heat of the day, by radiating the heat into space. Requires a
coating that reflects all incoming sunlight.
https://phys.org/news/2018-10-energy-saving-radiative-cooling-ready-real-world.html
From: AF <[email protected]> On Behalf Of David Coudron
Sent: Friday, August 9, 2019 7:34 AM
To: AnimalFarm Microwave Users Group <[email protected]>
Subject: Re: [AFMUG] Small climate controlled enclosure
We have had pretty good luck fan cooling using relays. Seems very reliable,
but of course will only cool to ambient temp and you have to be open to the
outside. If you need a fully closed and cooled enclosure you probably will
have to buy a good enclosure and purchase the cooling separately from what we
have found by doing a quick look in the past. Polycase and FactoryMation have
pretty good prices on decent enclosures. Kooltronic and others make closed
loop AC/cooling for enclosures but we haven’t dug too deep on them as fans seem
to handle the issues for now.
Regards,
David Coudron
From: AF <[email protected]> On Behalf Of Jason McKemie
Sent: Thursday, August 8, 2019 5:32 PM
To: AnimalFarm Microwave Users Group <[email protected]>
Subject: [AFMUG] Small climate controlled enclosure
I'm looking for a small enclosure that has either AC or TEC cooling to house a
PON OLT and power equipment. Would be nice if someone made an outdoor rated PON
OLT that is affordable, but those don't seem to exist. I would be attaching
this enclosure to a utility pole.
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